Alberta Class 7 License Practice Test

How is a traffic circle different from a roundabout?

1. The centre island of a roundabout is larger than that of a traffic circle

2. The centre island of a roundabout is smaller than that of a traffic circle

3. There are no differences between the two

4. Traffic circles are always larger

The correct answer is: The centre island of a roundabout is smaller than that of a traffic circle

A traffic circle is different from a roundabout primarily in terms of the size of their central islands and their traffic management principles. In a roundabout, the central island is indeed smaller, which contributes to a design that promotes slower speeds and provides safe merging of vehicles entering and circulating. The smaller central island encourages drivers to yield to the traffic already in the roundabout, leading to a more efficient flow. On the other hand, traffic circles tend to have larger central islands and often allow for higher speeds. They generally have more complex intersections, which can lead to less predictable traffic patterns and increased potential for accidents. The design of a traffic circle often enables more extensive routes to be accommodated, but this can complicate the right-of-way rules. This distinction in size and traffic management strategy is crucial for drivers to understand, as it impacts how they should navigate these two types of intersections safely.